#include <stdio.h>

// * 号代表变量地址
int function_1(int x, int *y);

/**
 * 返回多个值
 */
int main() {

	int x = 3, y;

	printf("x = %d, y = %d\n", x, y);

	int z = function_1(x, &y);

	printf("x = %d, y = %d, z = %d\n", x, y, z);


}

int function_1(int x, int *y) {
	// *y 指向原变量
	*y = 5;
	return x + *y;
}
